Thermax Limited Design Engineer Interview Questions and Answers

I have 5 years of experience working as a Design Engineer in the automotive industry.

• Designed components for new vehicle models

• Collaborated with cross-functional teams to ensure design feasibility

• Utilized CAD software to create detailed drawings

• Performed testing and analysis to validate designs

• Implemented cost-effective solutions to improve product performance

I have handled various projects in my previous organisation including designing new products, improving existing designs, and collaborating with cross-functional teams.

• Designed new products from concept to production stage

• Improved existing designs to enhance performance and reduce costs

• Collaborated with cross-functional teams including manufacturing, marketing, and quality control

• Managed project timelines and budgets e...read more

CT current can be calculated by dividing the primary current by the turns ratio of the current transformer.

• CT current = Primary current / Turns ratio

• Primary current is the current flowing through the primary conductor

• Turns ratio is the ratio of the number of turns in the primary winding to the number of turns in the secondary winding

Lockout is a safety procedure used to ensure that machinery or equipment is properly shut off and cannot be restarted until maintenance or servicing is completed.

• Lockout involves isolating energy sources to prevent accidental startup.

• Lockout devices like padlocks and tags are used to physically lock equipment.

• Lockout procedures must be followed to prevent accidents and injuries.

• Examples of lockout include locking out e...read more

IP65 for panel refers to the level of protection against dust and water ingress.

• IP65 rating means the panel is dust tight and protected against water jets from any direction.

• The first digit '6' indicates the level of protection against solid objects like dust.

• The second digit '5' indicates the level of protection against water ingress.

• Commonly used in outdoor or industrial applications where the panel may be exposed to...read more

TCS and Master Trip Relay are protective devices used in electrical systems to prevent damage during faults.

• TCS stands for Time Current Characteristic Relay, which operates based on the relationship between time and current to trip the circuit breaker during faults.

• Master Trip Relay is a relay that receives signals from various protective relays and initiates a trip signal to disconnect the circuit in case of a fault.

• B...read more

LSC 2A and LSC 2B are standards for lighting in commercial and industrial buildings.

• LSC 2A and LSC 2B are part of the Lighting Power Density (LPD) requirements in building codes.

• LSC 2A is for commercial buildings while LSC 2B is for industrial buildings.

• They specify the maximum allowable power consumption for lighting per unit area in a building.

• For example, LSC 2A may require a maximum LPD of 0.9 watts per square foot

REF protection is used to prevent damage to equipment from electrical faults. High impedance protection is used for sensitive equipment, while low impedance protection is used for power systems.

• REF protection is used to detect ground faults and prevent damage to equipment.

• High impedance protection is used for sensitive equipment that requires high accuracy and low fault currents.

• Low impedance protection is used for pow...read more

ANSI codes are used to identify various types of protection devices in electrical systems.

• ANSI code 50/51 is for instantaneous overcurrent protection

• ANSI code 67 is for directional power protection

• ANSI code 87 is for differential protection

• ANSI code 59 is for overvoltage protection

A free body diagram of a beam shows all external forces acting on the beam.

• Identify all external forces acting on the beam such as gravity, applied loads, and reactions at supports.

• Draw a simple sketch of the beam with arrows representing the direction and magnitude of each force.

• Label each force with appropriate symbols or letters for clarity.

• Ensure that the forces are correctly positioned and oriented relative to the

Positive displacement pumps move fluid by trapping a fixed amount and forcing it through the discharge pipe. Negative displacement pumps move fluid by creating a vacuum to draw in and push out the fluid.

• Positive displacement pumps trap a fixed amount of fluid and force it through the discharge pipe

• Examples include gear pumps, piston pumps, and diaphragm pumps

• Negative displacement pumps create a vacuum to draw in and pu...read more

The material used for casing is typically chosen based on factors such as durability, weight, cost, and aesthetics.

• Common materials for casing include plastic, aluminum, steel, and carbon fiber.

• Plastic is often used for its lightweight properties and cost-effectiveness.

• Aluminum is chosen for its strength-to-weight ratio and corrosion resistance.

• Steel is preferred for its durability and impact resistance.

• Carbon fiber is...read more